Answer:
The value of C is 3
Step-by-step explanation:
all of the angles of a triangle add up to 180°. first you would add 92 and 46 and get 138. You then subtract 180 and 138 and get 42. then you divide 42 by 14 and get 3. then substitute 3 back into the equation and you get 180.
I believe the answer is B: 3 + 7 + (-10).
In the second step you should have subtracted the 2x to move it to the other or side of the equals sign
Do you have A picture of the line?
